Multiple firing stroke surgical instrument incorporating electroactive polymer anti-backup mechanism
a multi-fired stroke, surgical instrument technology, applied in the direction of surgical staples, surgical forceps, paper/cardboard containers, etc., can solve the problems of binding or other malfunction, long and narrow instruments used in such procedures, etc., to prevent inadvertent retraction of firing components
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[0033]In FIG. 1, a surgical device suitable for endoscopic and laparoscopic use is depicted that advantageously combines a multiple firing stroke, automatic retraction of firing components, and an advantageously electrically actuated anti-backup mechanism consistent with the present invention to prevent inadvertent retraction between firing strokes. In FIGS. 2-3, 3A a version of the anti-backup mechanism of FIG. 1 is depicted. In particular, an electrical-mechanical (hybrid) anti-backup mechanism modifies the wholly mechanical implementation described in more detail in the afore-mentioned U.S. patent application Ser. Nos. 11 / 052,387 and 11 / 052,632, both of which more fully explain closure and firing operations of the handle common to the illustrative versions herein. In FIGS. 4-6, a version of the electrically actuated anti-backup mechanism further omits the mechanical portions for the mechanical end of firing travel and manual release of an anti-backup mechanism, relying solely upo...
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